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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accounting Manager	Patricio Simpson	England	1 2 3 4 5
2	Sales Representative	Patricio Simpson	Spain	1 2 3 4 5
3	Marketing Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
4	Sales Agent	Pascale Cartrain	Germany	1 2 3 4 5
5	Sales Associate	Matti Karttunen	Germany	1 2 3 4 5
6	Marketing Assistant	Jaime Yorres	USA	1 2 3 4 5
7	Sales Agent	Patricio Simpson	England	1 2 3 4 5
8	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
9	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
10	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
11	Owner	Matti Karttunen	France	1 2 3 4 5
12	Marketing Assistant	Howard Snyder	England	1 2 3 4 5
13	Marketing Assistant	Jaime Yorres	Italy	1 2 3 4 5
14	Sales Representative	Elizabeth Lincoln	Argentina	1 2 3 4 5
15	Marketing Assistant	Hanna Moos	Spain	1 2 3 4 5
16	Marketing Manager	Patricio Simpson	Brazil	1 2 3 4 5
17	Marketing Manager	Georg Pipps	Brazil	1 2 3 4 5
18	Sales Associate	Pascale Cartrain	England	1 2 3 4 5
19	Accounting Manager	Howard Snyder	France	1 2 3 4 5
20	Accountant	Patricio Simpson	Bulgaria	1 2 3 4 5
21	Accounting Manager	Antonio Moreno	England	1 2 3 4 5
22	Sales Associate	Matti Karttunen	France	1 2 3 4 5
23	Marketing Manager	Antonio Moreno	England	1 2 3 4 5
24	Sales Representative	Jaime Yorres	Germany	1 2 3 4 5
25	Accounting Manager	Hanna Moos	Bulgaria	1 2 3 4 5
26	Marketing Manager	Georg Pipps	Brazil	1 2 3 4 5
27	Accountant	Paul Henriot	France	1 2 3 4 5
28	Sales Manager	Georg Pipps	Germany	1 2 3 4 5
29	Sales Agent	Georg Pipps	England	1 2 3 4 5
30	Accountant	Georg Pipps	Austria	1 2 3 4 5
31	Owner	Antonio Moreno	USA	1 2 3 4 5
32	Owner	Hanna Moos	France	1 2 3 4 5
33	Marketing Assistant	Pascale Cartrain	Spain	1 2 3 4 5
34	Sales Manager	Georg Pipps	Bulgaria	1 2 3 4 5
35	Accountant	Elizabeth Lincoln	France	1 2 3 4 5
36	Sales Agent	Georg Pipps	USA	1 2 3 4 5
37	Owner	Georg Pipps	Germany	1 2 3 4 5
38	Owner	Matti Karttunen	Italy	1 2 3 4 5
39	Sales Consultant	Georg Pipps	Germany	1 2 3 4 5
40	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
41	Sales Consultant	Antonio Moreno	Germany	1 2 3 4 5
42	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
43	Accounting Manager	Howard Snyder	USA	1 2 3 4 5
44	Sales Representative	Pascale Cartrain	England	1 2 3 4 5
45	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
46	Owner	Georg Pipps	USA	1 2 3 4 5
47	Marketing Assistant	Pascale Cartrain	Germany	1 2 3 4 5
48	Sales Consultant	Matti Karttunen	Brazil	1 2 3 4 5
49	Marketing Assistant	Howard Snyder	England	1 2 3 4 5
50	Sales Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
51	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
52	Owner	Antonio Moreno	Spain	1 2 3 4 5
53	Sales Agent	Howard Snyder	Argentina	1 2 3 4 5
54	Owner	Howard Snyder	Germany	1 2 3 4 5
55	Accounting Manager	Georg Pipps	Austria	1 2 3 4 5
56	Accountant	Antonio Moreno	USA	1 2 3 4 5
57	Sales Associate	Elizabeth Lincoln	Austria	1 2 3 4 5
58	Accounting Manager	Georg Pipps	Argentina	1 2 3 4 5
59	Sales Consultant	Howard Snyder	Austria	1 2 3 4 5
60	Sales Representative	Hanna Moos	USA	1 2 3 4 5
61	Marketing Assistant	Pascale Cartrain	USA	1 2 3 4 5
62	Sales Consultant	Elizabeth Lincoln	France	1 2 3 4 5
63	Accountant	Patricio Simpson	England	1 2 3 4 5
64	Accounting Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
65	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
66	Sales Manager	Howard Snyder	Argentina	1 2 3 4 5
67	Owner	Antonio Moreno	France	1 2 3 4 5
68	Marketing Assistant	Georg Pipps	Italy	1 2 3 4 5
69	Accounting Manager	Pascale Cartrain	Italy	1 2 3 4 5
70	Sales Associate	Hanna Moos	Argentina	1 2 3 4 5
71	Marketing Assistant	Antonio Moreno	USA	1 2 3 4 5
72	Sales Agent	Elizabeth Lincoln	Argentina	1 2 3 4 5
73	Accounting Manager	Pascale Cartrain	USA	1 2 3 4 5
74	Accountant	Georg Pipps	England	1 2 3 4 5
75	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
76	Owner	Antonio Moreno	USA	1 2 3 4 5
77	Accountant	Hanna Moos	Argentina	1 2 3 4 5
78	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
79	Sales Associate	Paul Henriot	England	1 2 3 4 5
80	Sales Consultant	Pascale Cartrain	Austria	1 2 3 4 5
81	Owner	Howard Snyder	Austria	1 2 3 4 5
82	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
83	Accounting Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
84	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
85	Sales Agent	Matti Karttunen	Italy	1 2 3 4 5
86	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
87	Accounting Manager	Hanna Moos	Italy	1 2 3 4 5
88	Sales Representative	Jaime Yorres	Austria	1 2 3 4 5
89	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
90	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
91	Sales Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
92	Marketing Manager	Hanna Moos	France	1 2 3 4 5
93	Sales Associate	Howard Snyder	USA	1 2 3 4 5
94	Sales Associate	Jaime Yorres	France	1 2 3 4 5
95	Owner	Matti Karttunen	Spain	1 2 3 4 5
96	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
97	Sales Associate	Matti Karttunen	Austria	1 2 3 4 5
98	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
99	Owner	Patricio Simpson	France	1 2 3 4 5
100	Sales Manager	Pascale Cartrain	Argentina	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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